/Engine/Source/Runtime/Engine/Public/SceneView.h
For r.DisplayInternals (allows for easy passing down data from main to render thread)
struct FDisplayInternalsData
int32
DisplayInternalsCVarValue
uint32
NumPendingStreamingRequests
-1 if not set, fromIStreamingManager::Get().StreamAllResources(Duration) in FStreamAllResourcesLatentCommand